Presto-Chango! The medieval warming period has disappeared, or not!

“An old sarcastic saying goes, “When the facts doesn’t fit the theory, change the facts.” Mann and Hayhoe provide perfect real-world examples of such perniciousness. Powerful scientific evidence supported near-universal agreement about the existence of the Medieval Warm Period. Then Mann and Hayhoe, supported by little or no compelling evidence, waved a magic wand and made the Medieval Warm Period conveniently disappear.” click here

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